Dpsyco is a automated system to distribute system configurations to several computers. It is written mainly for the Debian distribution but should be portable (without too much difficulties) to other distributions or Unixes as well. It consists of a number of shell scripts to perform the desired actions. With it you can handle users, add ssh-public-keys, patch the system, update things using cfengine, install files (overriding other package files), and more.
Sencap is a simple ENCAP software manager. Encapping is a method of installing software from source tarballs into private trees (bin, lib, man, share) and symlinking them to the system tree (e.g. /usr/local). Uninstallation of encapped software is quick, reliable and easy. Encapping is best used to augment the default package manager, not to replace it.
tkxinput contains Xi, a library that adds Xinput management capabilities to the Tk toolkit, and a utility named calibrate that can be used to test various aspects of the Xinput configuration of an X server. calibrate can be used, as its name implies, as a touchscreen calibration facility.